Valve



Aprilza, 1929. H. VEEDER 1,710,248

VALVE Filed Aug. l, 1927 Wig@ INVENTOH Patented Apr. 23, 179219.

UNITEDSTATES f- 1,710,245 PATENT VIIiFICE.,y

CURTIS HUSSEY VEEDER, OF HARTFORD, CONNECTICUT.

VALVE.

Application. filed August 1, 1927. Serial No.` 209,651.

f ventthe possibility of leakage even in long e ci use without requiring the application ol ordina ry packing glands in which the ponerle quired to lturn the valve is reduc-ed toa nnninunn through a reducthni of jlrictional resistance, and in whichr the Valve plug' shall be so related to the oierating stein and handle that itfshall be prop ycentered and not liable to beunseated oy ordinary manipulau tion.

rifhe invention Will he more fully explained hereinafter with reference to the accompanying drawings in which it is illustrated and in which:

-l"1}i1.i'e l is a view in longitudinal sectional elevati-on oif a valve which is constructed in accordance with the invention.

Figures 2 and 3 are detail Views in transverse section. on the planes indicated by the broken lines and 3 3 respectively oil Figure l,

rlhe body o of the valve is vi'oru'ied with a conical se o to receive the correspondingly loriued valve plug; 7i. The Valve is se constructed as to periuit at'n'ill the deliif'ery of water or other liquid l'roin a source or supply to a place .vhere7 for example, the pressure ot the supply niay be utilized, and the relief of the 'pressure at the place use. Accordingly the body a is adapted for the connection olf a supply pipe c vwith a corresponding` port c, a. discharge pipe (Z with a corresponding' port d', and an exhaust pipe c with a corresponding port. The valve plug),` o is likewise provided with a passage o, through which the supply port e may be placed in coniniunicatiou with the pipe (l through which the water yis lo be coiu'lucted to the place where the pressure ot the supply may he utilized7 and ywith a lnissage e tor coniinunication between pipes (Z and e. The plug' o, as will be observed, is a tapered plug' and lits with a proper Working` lit in the correspondingly tapered seat o in the body a. Although it is of small diameter in order to reduce friction as inuch as possible and there fore to reduce the power required :loturn the `valve, it nevertheless has large surface area around its openings7 thereby ollering long distances from one opening to another and reducing leakage. n

Under the conditions of the particular use for which this valve has been designe/rl, that is to say, the operation olI Waste 'valves of bathtubs, ete., it is necessary that the Valve plug,l lshall be truly centered in its seat, and shall be pressed into its seat with a suitable, yielding force, and that leakage past the stein or the valve shall be prevented at all times7 Withy out inaliing the valve di'licult of operation. ln the construction of these valves, .it has been round that it is ditlicult to malte the tapered seat in the body exactly concentriowith thel 'retainine' nut through which the valve stein passes at the outer end ol" the body especially when the 'valve stein is integral With the plug` and also that any side pressure on theoperating handle had a tendency to prevent perfect seatinp` of the plug in the body. Accordingly the operating stein f, to which the operating handle is applied, is iliade separate frein the plug Z) and is connected therewith through a loose or Wabble joint. This joint niay be constructed as shown in the dra wing, in which the plug' is cupped, as indicated at Z22, to receive the relatively lai-eje head f2 oll the stein 7i, the head being' rounded as at j* to bear against the bottoni of the cup. A. pin f4' which passes loosely through the head f: enlarged l'or this purpose, serves to connect the plug' with the operating' stein ilor rolation. As an etlective .means ot sealing' the plug Z) and transmittingh pressure thereto andof supporting the reduced 'valve stein a gainst distortion, a split spool g is applied to a reduced portion f5 of the operatingstein f and receives externally a winding` ol line copper wire, as at g. This bushing' is made of special. anti-friction iuetal and serves to take the thrust ol the hereinafter mentioned spi-ingr. lfretorably, the valve stein 'lio ined with a reduced port-ion lo receive the spool, in order that friction may be reduced Ylior the purpose ot making easy the operatimi oli the Valve.

Between the split sleeve g and the gland nut t threaded into the outer end of the body a is placed a spiral spring e' which, acting through the rsplit sleeve g, the shouldered stein f and the head f2, presses the plug' Z) into its seat with the desired degree of pressure. The stein f has a free lit Within the `gland nut L and the pressure of the spring 'a' may he regulated as desired. by rotation of the nut la or the interposition of the Washer or washers fr between the nut and the spring. As shown, the nutinay he locked in adjusted position by a pin h2. It vvill be noted that the function of the spool or collar g is to transmitthe pressure of the spring e' to the head f2 of the valve stein and through that to the valve plug to press it closely into its seat- It' ivill be observed that by the construction described the plug is held always in its seat with a yielding pressure, that the plug may always be c ntered in its seatl Without regard to the operating stem, and that side pressure Yon the operating handle cannot al'leet the seating of 'the plug.

I rlailnr as niy invention: Y

l. In a plug valve, the combination of a body having a tapered seat and suitable ports, a tapered plug ha Ying passages for cooperation With the ports, a valve stein operatively associated With the plug and having a reduced portion and an enlarged head, a spool applied to the reduced portion of ythe valve stein to transmit pressure to` the head of the stein'and through it to the valve plug, a spring to` exert pressure against the spool, and an abutment for the spring.

2. In a plug valve, the combination of a body having a tapered seat and suitable ports, a tapered plug having passages for cooperation with the ports and having a cupped end, a valve stein having a reduced portion and an enlarged head to enter the Cup, a pin passed loosely through the head and engaging the ivall of the cupped portion ot' the plug, a spool applied to the reduced portion of the valve stein to transmit pressure to the head of the stein and through it to the valve plug, a spring to exert pressure against the spool, and an abutment for the spring.

3. ln a plug valve, the combination of a body having a tapered seat and suitable ports, a tapered plug having passages for cooperation with the ports, a valve stein operatively assoziiatjed ivi th the plug and having a reduced Y orinar-rs nussnv vennen. 

